, like drains or rotting garbage”
Certified beer flavour standard used to train professional beer tasters to recognize and scale the intensity of mercaptan character. Methanethiol is the main thiol found in beer. It arises due to yeast autolysis at the end of fermentation. At low levels it contributes to the flavour complexity of fresh beer; at higher levels it is an off-flavour.
Food grade | free from sensory impurities | extensively tested | safe to smell and taste.